From "Hoyle's Games Improved" by Charles Jones Esq., published 1803
The one is a plan for placing the forts, &c. &c. with the distances measured; the other is also a representation of the superficies of a billiard table, with all the forts and castles properly placed.
a a a The balls. b The pass. c c Advanced forts. d d Reserved forts. f Grand fort. g Battery.